Vampire mace

Info
The Vampire Mace is one of the best one-handed Dex weapons in the game. There's a high cost to obtaining it (see below), but if you've rocked the boot then it's worth it.

As well as being maximum weapon class it has a powerful special attack. Every random 4 heartbeats it will leach mana from your opponent giving you a boost. As well as that, when the special kicks in, it does an extra 30-40 damage (which is huge!).

As a bonus, when the special does not kick in, it does 20-30 bonus damage, so every hit with this is formidable.

How To Get It
In order to get the Vampire Mace, you need to find Lance in the L&F Headquarters in New Genesis. It's only a small area, and you don't have to kill anything to get to him, but when you do find him, he'll want a whole bunch of uniques in exchange for the Mace.

You'll need to hand over the following uniques:

A gun, a one-handed weapon, a two-handed weapon, one of each armour type.

Once you have that Lance will double cross you and throw you into a small four room area (arranged in a square) along with an aggressive walking NPC called the Metal Contraption.

The Contraption is a tough cookie, it'll heal, has 3500hp, and a special attack that'll hit you for up to 60hp at a time. It does however carry the Vampire Mace.

Once the Contraption is dead you can leave the small area and go and menace Abacus with your shiny Mace.